Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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All episodes available on BBC iPlayer (22 total)
Sun 13 Dec 2015 20:00
BBC Two England
All upcoming (1 new and 2 repeats)
Where to buy
BBC Horizon's intimate portrait of ESA's first British astronaut
Have a go in this brand new interactive documentary.
See all clips from Horizon
There is a growing body of evidence showing that playing video games could be good for us
Discover the truth about the frequently misunderstood condition
Find out what your risk of heart attack is using this online calculator.